42-417-36047

Final Completion

NAIL B-8

SHACKELFORD County · District 7 · M & K OPERATING LLC · CRONK (TANNEHILL)

Permits

Max Depth

950 ft

First Permit

1984-11-14

Latest Activity

1988-08-16

Lifespan

4 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1984-11-24

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: M & K OPERATING LLC ≠ Permit: RH RESOURCES GROUP, INC.

Resolved via: scheduling → M & K OPERATING LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

originally filed by RH RESOURCES GROUP, INC. — asset transferred

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Gas

production & DCA →

Formation Tops (3) Elevation 1,524 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
FRYE	758 ft	+766 ft
TANNEHILL	836 ft	+688 ft
TANNEHILL SAND (Tannehill)	856 ft	+668 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (2)

Interval	Type
760–766 ft	Perforated
861–865 ft	Perforated

Casing (1)

Size	Set Depth	Cement
4.5"	946 ft	275 sx

Permit History (2)

#350221 Recompletion Final Completion

NAIL B-8 · 835 ft

1988-08-16

#257794 Drill Final Completion

NAIL B-8 · 950 ft

1984-11-14

Applications (2)

#350221 A RH RESOURCES GROUP, INC.

received 1988-08-16

#257794 A RAMPART PETROLEUM, INCORPORATED

received 1984-11-14

Records & Logs

4 completion filings on record · 1 with log images at RRC.

W-2/G-1 1988-10-10 log on file

W-2/G-1 1988-10-18

W-2/G-1 1985-01-08

W-2/G-1 1985-01-26

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in SHACKELFORD County.

Well Details

Well Number: 6
Max Depth: 950 ft
Drill Type: Vertical
County: SHACKELFORD
District: 7
Operator: M & K OPERATING LLC
Completed: 1984-11-24

Operator

Name: M & K OPER LLC
Location: ALBANY
P-5 Status: Delinquent (filed 2024-02-28)
Cum Oil (all leases): 179,444 bbl
Cum Gas (all leases): 135,355 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 11